Auth bypass in Cisco iOS Xr Software
CVE-2020-3364
A vulnerability in the access control list (ACL) functionality of the standby route processor management interface of Cisco IOS XR Software could allow an unauthenticated, remote attacker to reach the configured IP addresses on the standby route processor management Gigabit Ethernet Management interface. The vulnerability is due to a logic error that was introduced in the Cisco IOS XR Software, which prevents the ACL from working when applied against the standby route processor management interface. An attacker could exploit this vulnerability by attempting to access the device through the standby route processor management interface.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Cisco iOS Xr Software
- Cisco iOS Xr — versions 6.7.1, 7.0.2, 7.0.11
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xracl-zb… (vendor-advisory, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3364?
- CVE-2020-3364 is a medium-severity vulnerability in Cisco iOS Xr Software, classified under Improper Access Control. CVSS score: 5.3/10. Published 2020-06-18.
- How severe is CVE-2020-3364?
- Medium severity. CVSS v3 base score is 5.3 out of 10.